Nautical apparatus.



No. 344,837. PATBNTED PEB. 19, 19o?.

P. VANI/31M.

NAUTIGAL APPARATUS.

APPLICATION FILED MAY Z6, 1905.

2 SHEETS-SHEET 1.

lNo. 844,837.

PATENTED FEB. 19, 1907.

F. VNZINI.

NAUTICAL APPARATUS.

APPLIUATION FILED HAY 28, 1905.

' 2 SHEETS-SHEET 2.

W/TNESJSESf FILIPPO VANZIN I, OF BOLOGNA, ITALY.

NAUTICAL APPARATUS.

I Specification of Letters Patent.

Patented Feb. 19, 1907.

Application filed May Z6, 1905. Serial No. 262.380.

To all w'tont it ina/y concern:

Be it known that I, FILIPPO VANZINI, second lieutenant It. I. N., a subject of the' King of Italy, and resident of Via Crefici 4, Bologna, Italy, have invented a new and useful Nautical Apparatus, of which the following is a specification.

This invention relates to improvements in -instruments which independently of astronomical observations may be used in accurately determining the eographical coordinates occupied by a ship throughout its course; and it more particularly concerns a structure for so doing in an automatic manner and without any auxiliary reference other than to the usual ship chronometer.

Heretofore the determination of the latitude and longitude occupied by a ship has necessitated recourse to' astronomical observation, and this in stormy weather is most difficult, and in such cases it has been necessary to rely for a great part upon approximations of the distance traveled by a ship l obtainable from the shipslog, which distances are only reducible to geographical coordinates by computing therewith the factors of the lapsed time taken from the chronometer and the directions traveled taken from the compass. It will be apparent that such methods afford great facilities for the introduction of errors.

My invention contemplates a continuouslyoperating apparatus which automatically gives readings directly capable of being interpclated with the aid of a chronometer into degrees of latitude and longitude. y f

Further objects of this invention lie in the production of an instrument 4capable of being produced at small cost .and which embodies a system of simple coperating elements in such a manner that needless complications .in the operation of thesame will be ,eliminated.

Other objects and advantages of this inventionl will be in part obvious and in part more specifically pointed out hereinafter, and

with these and other ends in view my invention accordingly consists in the combination 'of parts, features of construction, and ar- ,ran ement of elements hereinafter more explicitly shown as an exemplification of the embodiment of the invention. l.

That the same may be more fully understood and made com rehensible by those skilled in the arts to W ich it relates, I have appended drawings of a preferred embodiment thereof, and now upon making reference to such drawings by means of referenceletters, which similarly denote corresponding parts throughout all the views, `it will be seen,

that- Figure 1 shows a vertical detailed sectional view of the complete apparatus. Fig. 2 illustrates a like view taken on a vertical plane at right angles to the former figure. In this view the dial and pointers marking the variations of the geographical coordinates have been removed, as Well as certain underlying 4features of the same, in order that clearness may be had. vIn dotted lines is indicated the position of the large spherical calotte, hereinafter referred to. horizontal section taken on -line w of Fig. 1 and showing in detail further features of the variable connections governing the movement of the ointers. takenA throng the upper gyroscope and more clearly showing t e arrangement for equilibrating the same.

Referring to the drawings now more spe- Fig. 3 is a Fig. 4 is a section be observed that the present embodiment comprises two independently-operating gyroscopes 1 and 17, respectively. The construction and working of my invention depends upon the well-known principle that the axis of a freely-suspended and rapidlyrotating gyroscope tends to preserve an invariable4 direction in space, particularly when the gyroscope is well balanced. t follows that if such a gyroscope be mounted on board a ship, with its axis inclining in a direction normal to the surface of the sea-that is,pcinting toward the center of the earththen a translation of the ship around the curvature of the earth will have no eHect upon the absolute direction of the axis, which will remain invariable, but which in the new position of the ship will be inclined out of the new normal in such a manner that the proj ections of the-angle with the axis and such normal, respectively, on theplanes of the parallel and of the meridian will determine the variations in latitude and longitude between the points through which the lship has passed. It is to be noted in this connection that the rotation of the earth will have a like.

`effect upon the gyroscope, but that such va- IOO riation is absolutely uniform and determinable by a reference to the ship' chronometer, which for every twenty-four hours lapsed will denote a variation of three hundred and IIO 1 keyed and the gyroscope 1 is always readily `ascertainable.

I prefer to'construct the gyroscope 1 in the manner shown b same may be as perfectly balanced as possible. This consists of three inductors 2, 3, and 4, respectively, which are fixed and onto the shaft 8, which does not rotate relatively to suchA inductors. Armatures 5, 6, and 7 are revolubly mounted, by means of suitable hubs 9, upon said shaft 8, and usually such armatures will rotate around the periphery of the above-mentioned inductors. The masses of the latter, as designated by 2 and 4, are equal to one another, as are their moments of inertia with respect to the axis of shaft 8, and combined their sums are equal, respectively, to the mass and to the moment of inertia with respect to the axis of the same-shaft 8 of inductor 3. "A like relation exists between the armatures 5 and 7 and with respect to the armature 6. 'In order that the lateral displacement of such armatures 5, 6, and 7 may be prevented, fixed collars may be provided upon the shaft 8, adjacent the hubs 9, in a manner such as will be readily comprehensible to any ordinarymechanic, and therefore such collars or sleeves have not been more specifically detailed. It is to be understood that these gyrosc'opes are to be continuously rotated at high speed, which 'may be done, preferably,by electrical means, such as the employment of any ordinary three-phasemotive system, the gyroscopes being of course especiall adapted therefor. This also` will be readily understood and capable of application by those skilled inthe electrical arts, and therefore the electrical connections need only be briefly considered hereinafter.

y The gyrcscopes are mounted in a freelysuspended frame, swung from a jcist 28 of the s`iip. From such joist depend vbrackets 27 and pivotall carry a support 25, furnished with a circu ar hole circunsciibing Wiich is an annular groove wherein are arranged a series of small balls 26. 24 rests directly upon said balls in order to reduce to the lowest degree the frictional resistance. -An extension-'bar 23 depends from said bowl and suspends the large fork 22, w ich, as shown pai ticularly in Figs. 2 and 3,

ivotJly carry a large ring 21.y (Shown be st in Fig. 1.) At right angles to fork 22 the frame 14, together with all the features car- Fig. 4 in order that the- A herrispheric'al bowlA ried thereby, oscillates on pivots 20, provided on the large ring 21. system may be maintained verticaily and against oversetting, the lane of the'large ring 21 is situated soinew at'above the 'center of gravity of the structure carried-by the pivots'20. It will be obvious that by this system of gimbals tures carried thereby. are capable of being readily :positioned in any direction with respect to the suppoiting-joist, and thatjthe the frame 14 and the fea-V 1n order that the same will remain unaffected by anypitcling or rolling of the ship. Such frame, however, is maint; ined in racial planes intersecting in parallel lines regardless of the direction of travel of the s` ip or of any steeringor turning thereof. Tris is accomplished through t :e instrumentality of the lower gyrcscope 17, which is mounted with its axis lying parallel to the axis of the earth, such axis of the gyrcsccpe being pivotally'bearing in ring 18,

'wir ich in-turn and at Iiglzt angles to the gyroscopes axis is connected to france 14 by pivots 19.' The actuating vmeans for tf is gyroscope is electrical and the connection will be referred to hereinafter.

In order that the apparatus will work with a leigh degree of precision, it is desirable that the aboveenumerated pivotal connections be made e s frictionle ss as pzssible, and in t is case it wil-l be observed that theinvariable north and south pointing of the axis of gyrothe frame 1 4 from. asf

scope 17 will prevent suning pc sith-.ns other than in planes intersecting in parallel lines, the inter sections be- IOO ing always normal to the axis of the earth and A the planes being always radially extending from the center of the earth. It will also be l noted that wit: in ordinary lin its the small errors caused by the fr icticnal re sistance of the frame to being maintained in the afore said positions will tend to counterbalance and eli .i inate their selves on account of t"e opposing forces re sulting from the deviations in the course of the ve ssel, and also from the fact peculiar'to gyrcsccpes that a tendencyl to turn the axis of such gyre scope in a given plane will, in fact, cause the gyrc scope to actually assume a corresponding angular deviation in a'plane atright angles to that wit`" in wl ich such tendency is acting. Thus while t"e gyrc scope 17 may from various forces be bi'o'u g.' t to assurre an angular direction, such will not carry the frame 14 through a corresponding deviation. Such slight angular cnanges in the axis of the gyrescope may be readily elizrinated by forcibly biingingfthe sance to a true.

N S pcsition from time to time.

The indicating-gym scope 1 is suspendedon two concentric 'rings 10 and 13, lrespectively, its axis 8 having a normal or ot`^ eran gular directien withrfspect to the plane of Such axis tern inates aleng a IIO diameter of the inner ring 10 in pivotal beari second circunvscribin'g ring 13 by means of pivots 11 and 12, located at right angles to the s ialt 8, thereby constituting a perfect set of gimbals. This system is also revolubly mounted in frame 14, by means of pivots 15 and 16, en anating from said ring 13 at points normal to the diameter passing through pivots 11 and 12, respectively.

It will be observed that gyroscope 1 is free to assume any' axial direction Whatever regardless of the positions occupied by its mounting. It is from variations in the angular positions of such axis 8 that the longitude and latitude of the ship is ascei tsinable, and Wi ile any other suitable means for conveniently indicating such deviations may be employed l prefer in Apractice to make use of the indicating instrumentality now to be more specifically desciibed.

For indicating movements of the ship on and along arallels of latitude-such, for example, as t e equator-a spherical calotte 35 is a'llxed to pivot 12 of rin 10, i as to be carried and revolved by tlie same. Such calotte is provided with a toothed periphery in the manner of a bevel-Wheel and is in gear with a corresponding calotte 34, revolubly mounted on pinion 16 and carrying with it a gear-wheel 39, which by means of a pinion 42 (shown in Fig. 1) turns an index-pointer 43, and thereby indicates degrees of longitude upon a dial 41, hereinafter referred to.

Forindicating movements of the ship on and along parallels of longitude, the pivotI 16 of ring 13 is extended so as to carry a gearwheel 38, which is in mesh with a pinion 40,

aflixed to dial 41, which is revolubly mounted upon a suitable sleeve extending from frame 14. I't will be apparent that a revolution of ring 13 will cause a corresponding revolution in dial 41.

l Alixed pointer 44 is positioned immovably with respect to frame 14, and such pointer 4 4 designates degrees of latitude upon the dial.

The toothed wheels 38 and 39, as here shown,

have e'qual diameters, and mesh with inior s 42 and 40, also of equal diameter; but t e ratio of such gearing is quite arbitrary and may be varied at will, as the sole obj ect sought to be attained is the amplification of the variations shown by the pointers.

The operation of the apparatus is as fol-iA lows: When the vship begins her course, the axis of the inferior gyroscope 17 is placed ina direction parallel to the terrestrial axis, in order that the rotary motion of the earth should not exercise any perturbation and to `insure the frame 14 being maintained in the aforesaid positions. 'Ihe superior yroscope is placed with its axis normal to t e terrestrial axis and thereupon is completely felt the rotary motion of the earth and the axis of such superior gyroscope will continually and uniformly rotate in a plane normal to the axis of the earth at a rate of three hundred and sixty degrees for each twenty-four hours.

This rotation, however, does not introducev -not aected by the rotation of the earth and noting thatA all pitching and rolling of the ship is neutralized by means of the gimbal mechanism aforesaid, and that the lower gyroscope 17 preserves unaltered the position of the apparatus in the direction N S, let us suppose that the ship is situated at a point of the equator being the origin of the enumeration of longitude and that the face 0fthe dial is directed toward the west (the observer looking at Fig. 1 from the north-in a line normal tothe paper and extending to the south) and that the axis of the gyroscope is vertical, as well as the pointer 43 and 44, both indicating zero on the quadrant. If the ship is sailing 'on the equator or along a parallel of latitude, the frame 14 will travel along a plane preserving its initial N S position, and the axis of the principal gyroscope will always be inclined in the ships longitudinal medium plane, which now lies in the direction of the normal to the medium plane of the ship when the latter traverses such meridian. '1`he angular deviations of the axis will thus cause the ring 10 to rotate on its axes 11 and 12, carrying with it in revolution calotte .35 and therethrough calotte 34, to which the lon itudinal indicating-pointer 43 is a'tlixed. Suc motion will in no wise affect dial 41 or pointer 44, which will both remain immovable. Consequently the pointer 43 will read directly in degrees of longitude traversed by the ship. The degrees of latitude are indicated by the relative displacement of disk 41 and pointer 44. If the ship advances a certain arc along the meridian, the axis of the o'yroscope will rotate through a correspondlng angle without any lateral displacement'- that is, Wiljtl rotate through a plane at right angles to rame 14. This movement will cause ring 13 to revolve about axes 15 and 16, the latter carrying therewith gear 38 and IOO lIO

therethrough rotating disk 4 1. It will be noted windings -on .insulating Eriiaterial cable :passes froin"the ail;

othertarc, it i'ssevidentthatcombined:moire-l ments Will take iplace :in l.the :apparatus ene-4 bedying the :elementary `sones, :as described, produeing z a resultant frelative ireadjustment ofLdisk `etlzandpointersaa ande@ therebydetermining the yariationsfnf hothlatitudeand longitude. :ln-.using:thezapparatuslthewarions l pointers .may be adjusted .sofasto'lindicate zeroatth A.laegiririiiiglrlf the Noyagefand then the subsequent .indications of the appal ratus will directly -denote Athe variations of latitudeandlongitudeito-beiadded.to`orsub.-

tracted from thegeographiealfcordinatesaof the @point of departure. if preferred, how-A ever, the :apparatus amayibe adjusted lto =preliminarily denote the :exact-geographical eoordinatcsaofrthc-localityfromwhichrthcrstart is made. Infsuchaease ithe subsequent indications will :read directly:in .actuaLand absolute :geegrapliical ycerdinates lWithout `the necessity of interpolation. .Experiment .Will a indicate -the iconstance of corrections made necessary in rconnection .With the `ieading, of the instrument. scopes fI prefer atoimake luse of La lthreefphase system, anddnrder-that thereurrentimaybe properlyv led :into the. armatures ,i constituting features of the gyroscope, Within `the h'emispherical ibnwl' .214 ia nup if royided :with three concentric grooves or'l hannels 30, 'filled .with mercury :and .into which the three zconduetors v3d from :main oireuitposts '29. lt will be .apparent :that :a uniform Lconneetion `.will

beinsured by ithis y.arrar'igemenit regardless of;

any vmotion =or` rswin'ging of lithe :apparatus Emmi-such: grooves a serieszof aconductorsd separately .pass A out .and .continue through :a

passes, by-iiieansor' suitahleWelLknoumrcon.-

neotions, .along .theroourseron theiaxis'of the g-yroscope (indicated glay-.53) .and -omfthene the fconduetors 54 jbraneh out to :the 'induetorsA of :the-gyroscope 2, '3, .and e inra #manner showm :and understood. .ina .like ;mannerv a khindingposts .33 through 5D`to the inductorsof thegyroscope 17. .The fmotive 'eiorce ginay, a `direct rcurrent :and may "he .applied .fin fairy preferredimanner.

, By inspeotingzthefdllowingrolaims certain.

: madeapparent.

;means1mainta1n1ng s aidaxislin said -tion :and `:means for :indicating ;.angiilarrdev1 211i propelling ythese 'gym' I .have arranged :of fthe 'latter :with frame :14,

fif ipreterred, bey

yother variations Whichmay yhe .resortedto `this iiiiventicml will .be

Within `.the scope r'of .'1. LIn @nautical l.app aratus, aninstrument mounted tormaintain a .constantariial .direction space vmeans positioning .'said. instruv'nient in said direction; vismxfor indicatingron'a eomrxiondialtheangu- Y lar deviations from v-normals to the .earth of adialandi-.a'zmeohan- "such-.instrument Kas Lit :is `movedrelatively `to the earth,'whereby latitude :and longitude chengvare bothmade-apparent. 2. a-nautie'al apparatus, l an instrument lmounted -to maintain aconstant `axial vdirection 1n space, a supporting-.frame therefor,

'means constraininguaid iframe .'to'lie 1in parallel planes, and ving a .horizontal :axis mounted to maintain; a constant direction,

' vdirec-- ations -between `said ysupporting-rfranfxe `:an fixed instrument.

Sio

.3. In a.n.autical apparatus,.-aninstrument .mounted ltoinaintain fazconstant vaxial .direc-v tioniinsp ace, asupporting-rame .therefor a gsuchrame with .yrosco e vfor main g P litsiherizontal .axis inormal `to .the `terrestrial axis, :and .a .and pointers geared lto .dndicate angular deviations of i the l.aforesaid frame and Csupported instrument 4. In `a finautieal vapparatus, a zgtyroscope :mounted tumaintainea.constantraxial direction in espace, -.a supportingfframe therefor com rising :a horizontalaxis .and a system ofggimbals fornirelyreariying-said.v yrescope,

' .itslriori-` means fmaintainingfsaid frame Wit IOC zontal earns lin parallel A4fpositions Aand an .indii 55. ln 'a xnautical apparatus, a gyroscope mounted .to maintain-a constant axial direction in space, asupporting-lrame .therefor com rising a :horizontaierris and a .series of als l'for ireelycarryingrsai' ,-gyi'cscope, .a secondary gyroscope mounted- .Within said Jrame whereby `the vlatterfis fc'orstrainedito lie with ,its .horizontal .axis .normal .to the terrestrial iaxis, and indicating :means for denoting angular deviations .betweenssaid gyiescope and anormal to itheisurface df vthe earth.) Y

6. lln a :nautical :.apparatus, :a 'gyrescope mounted to :maintain a constantaxialfdirection Linspaee and atan-angle 4to the terres- :trial aaxis, .a supporting-'frame .therefor :com-

prising a horizontal axis, meansconstraining ysaidfiiaine torlie-nornial to the earth with'its .horizontal :axis perpendicular to .the terrestrial axis, and indicating means for denoting ,angular variations between the 'gyroscope .andframa '7. .Ina .nautical apparatus, two `gyroscopes, the one mounted .tomaintain a con- 'catingme ans-fordenotingangular dejvia'tions lbetweensaid ,gyros'oo'pe and anormal Ato the surface of the earth.

IIO

SVO

stant axial direction in space, and the other to similarly maintain a constant axial direction in space at-an angle to the aforesaid oscope, and means for indicating anguar deviations between said gyroscopes as the apparatus is moved from point to point on the terrestrial sphere.

` 8. In a nautical apparatus, two gyroscopes the one mounted to maintain ,a constant axial direction in space, parallel to the terrestrial axis, and the other to similarly maintain a constant axial direction in space at an angle to the aforesaid gyroscope, a supporting apparatus for said Vgyroscopes and means for indicating angular deviations betweensaid gyroscopes as the supporting apparatus therefor occupies dissimilar terrestrial locations. i

9. In a nautical apparatus, a frame swung upon gimbals permitting it to occupy any relative angular position in space, two gyroscopes carriedthereby, the one mounted in gimbals permitting it to assume any angular position in space with respect to said frame, andthe other mounted with its, axis normal to the plane of said frame whereby theV latter is prevented from rotating abouta vertical axisbut Without constraining its movement about a` horizontal axis, and indicating meansfor showing and measuring the angular deviations between said frame and the freely-supported gyroscope. 10. 'In a nautical apparatus, a gyroscope mounted to maintain a constant axial direction in space, said mountings comprising a supporting-frame having a horizontal axis constrained to lie normal to the terrestrial axis, a pair of concentric rings mounted within said frame to comprise a system of gimbals for freely carrying said gyroscope, and an indicating means for measuring angular'deviations between said gyroscopc and supporting-frame and comprising pointers each actuated by one of the aforesaid concentric gimbal-rings. .11. In a nautical apparatus, a gyroscope mounted to maintain a constant axial direction in space, said mountings comprising a supporting-frame having a horizontal axis which is constrained to pointnormal to the.

terrestrial axis, a pair of' concentric gimbalrings mounted withinsaid frame and freely carrying said gyroscope, a dial and two pointers geared to said rings whereby angular rotations of each of said rings will be correspondingly designated on said dial by correspending pointers.

12. In a nautical apparatus, a gyroscope, a frame freely supporting the same whereby it may be turned in any direction relatively to said frame, and a differential means carried by said frame for indicating the components of such relativemovement. ,l

13. In a nautical apparatus, a gyroscope, a frame freely supporting the same whereby a relative displacement in any direction may be had, an index for measuring such angular displacement in one plane, an independentlyoperating index for measuring such angular displacement in a plane normal to the preceding, and a differential means for actuating said indices.

14. In a nautical apparatus, a gyroscope, a frame supporting the same whereby-a relative displacement may be had freely in any direction, an index r`for measuring the component of -such angular displacement along `one plane, an index for measuring the component of such displacement'in a plane normal to the preceding, and a differential movement means for actuating said indices'.

15. In a nautical apparatus, aninstrument mounted to maintain a lconstant axial position in space, a supporting-frame therefor having an axis and constrained to lie with an axis in parallel positions comprising a pair of gimbals pivote at normal diameters whereby a displacement of the sup orting-frame with respect to the constantirection axis willbe resolved by'said gimbals into components along normal directions, an in dex operable from one of lsaid gimbals to measure the angular motion thereof, andan index operable from the other gimbal to measure its angular motion. 16. Ina nautical apparatus, a gyroscope mounted to maintain a constant axial direction in space, a supporting-frame therefor comprising a horizontal axis which is constrained to lie With its horizontal axis in a constant direction in space, a pair of concen-- tric gimbal-rings pivoted together along nor-- mal diameters, means connected with one of said rings for denoting the angular rotation thereof, and means connected with the other ring for denoting its angular deviation.

17. In a nautical apparatus, an instrument mounted to maintain a constant axial direction in space, a supporting-frame therefor comprising a horizontal axis which is maintained gyroscopically in a constant direction, a pair of concentric gimbal-rings pivoted together along normal diameters, means connected with one of said rings for denoting the angular vrotation thereof, and means connected with the other ring for denoting its angular deviations.

IOO

18. In a nautical apparatus, a gyroscope mounted to maintain a constant axial direction in space, a supporting-frame therefor comprising a horizontal axis and a series of gimbals pivotally attached along normal diameters for freely carrying said gyroscope, a

secondary gyroscope mounted within said frame whereby the latter'is constrained to lie with its horizontal axis normal to the terrestrial axis, and an indicating means attached to each of said gimbals for denoting the angular deviations thereof with respect to a normal to the surface of the earth.

ISO

iliflnfaaenautioal. -apparatnsmaegyroseope mounted. tosnfiaintain a-.constant faxi-aL'direc-- tionin. Space fand y:at Ian langle to-thev terres.

` trialz axis a :supporting-frame thereforineans 1 gyroscopically `constraining said frame to lie normal toJ the earth with its horizontal axis f St antaxial direction inzsp ace, anid\th'e other to.

similarlyrnaintain a` constant axial direction in space f ats-.arr angle. toctheeatoresaid. gyifof.- scope, and. means for-indicatingthe .angular deviations .along normal planesbetween said i gyroscopes.aethe'apparatusvoccupiesdissimb.

lan. terrestrial locations.

tl'ialaxis, and the'other to sirnilarlyniaintain:

a cons-tant axial direction-1n space atan angle'V 2 5 to the..aforesaid gyroseope, lasupporting ap paratus .and meansfor indicating angular. de- Y viationsfalong gnormal. planes .between said.

gyroscopesas the supporting apparatus.trav.l erses the surface of the earth;

3o 22. In anauticalapparatuaarame pivotedwithin dependent gimb-als permittingit` toa-occupy .any .f-r lative .angularcposition in spacewi-threspect. to. a yessel .carryingthe ap..-

paratus, two gyroscopes mountedwitliin said,

frame, I the one .within gijmbals .permitting it.

to.\ assurne any .ang ularposition in space with respect- .to saidname, andthe .other mounted. withits axis .parallel to .the terrestrial axis.. whereby suchframe prevented from rotate..A

1ngitsmovementl aboutahorizontal axis', and means fonindicatingand measuring the angu-- lar deviations .along normal planes .between said. frame@ and the. freely-supported ygyro- 23.,` In, a nauticalg. apparat.us,. a .gyroscope mounted-.to .maintain4 a constant axialdirece, tionl 1n. space; saidmountings ,comprisinga supportinggrame, thereto, aan.. inner ring pivoted yin a normal diameter to said outer ring, saidinnerring,-

containing j aforesaid .gyrosc c.pe,` land .means fonrneasuring angular. ueviationsofsaid rings with-...respect .to said-frame, comprising-.a

without` relative displacement by Aa vrotation ofithebuter ring,ysaid pointer .alone .be111g,

revolved .bya rotation-of said innerringj` framefreely .supporting ,th

' 21 In a nautical apparatus,.a vpair of.gyro'.; scopesftheone beingniounted.to-maintain a: constantaxialdirection parallel tothe terres.

ing about a vertical-.axle without .constrain-- an outer... ring pivoted pointer l irnmoitably positioned relative .to .said frame, and a diskand pointer movable.

24. 1n .a nautical apparatus, a gyroscope, a a

e sarne, a pointer. fixed .with respect to.said frame, -a d1al,lan other .pointer and :means connected Ito.. saidgyroscope. whereby said` dial .and .pointerwll mounted 'tomaintain -aconstant axial .posi-`- tion in space, a supportingtrarne therefor compri-singI al pair- 'ofv als .p'rvotedratanor-M 7 5 Inaldameters whereby 'a displacement of the supportingframe with respect tofsaid instru-1 ment 'will bev'a'esolvefd. 'by said imbals into' component "angular rotations .a ongfunorrnalf. planes, an indeXXed :to-' said'fr'ame and :a--So dialv and 'anoth'er indem operable from said gimbals, said dial being directly 'geared to one of said gimbals and said pointer .to ythe other whereby an independent-rotation of the latter willl rotate said indexlwithout aectingjf" said dial, and an independentrot'ationof the former gimbal Will'rotate saidfinde'X and saiddial. at alike angular velocity; u

I 26.'- In anautical apparatus,"a'gyroscope,r mountings .thereforcomprisingga.supportingfygo frame, an outer .ringpivoted thereto, an yin- 'neri-ing pivoted transversely` `said outer ring, and containing the aforesaidl` 'gyroscope, a gear alliXed to thepivot of saidy 'inner ring and revoluble thereby,fsaid gear-.p5 being beveled to. a'gcar revoluble about the 'axis ofthe outer ringJand. 5a .pointeiposie'v tively-.actuated thereby," another pointerv brv dalcennected to and 'posi-tively actuated byy I.the :axis of said Eouter .ringhand ,a'pointen 'roo affixed to-said supporting.-fframe.V

l 27...` In a nautical "apparatus,- a:gyroscope;V an inner.v ring,.pivotallyusupporting k thesame and mounted toxfr'evolveawithin ,an-.outer ring ,.the..latter being/.mounted with its axis';;ic 5y normal to. the .axis of theinnerringgu onta; freely-suspended fr`ame,pa caldtterevo ubly, p carried by said v'inner vring-in 'engagement-y with a calotte loosely" mounted on tneaxis of.' the outer ring, ana positively actuatinggai 1o pointer, a dial. .connected 'to'.and ppsitively` actuated. bythe axisv of. said outerr1ng,'and

a iXei pointer. attached to4 said-'trame, the latter beingconstrained gyroscopicallywith yts'horizontal.axesin' a constant direction.

28'., In; a nauticalapparatus, agyroscope, mountngs therefor. comprising a supporting frame., .an .outer .ringipivoted thereto and positively actuating from its axis .a dial,Y an inner. ring transversely .pivoted withinsaid 12o outer-ring and positively; actuatingfr'om its aies by means Oia calotte, a gear loosely" mounted on A theaxls of the; outer ring and carrying-.a pointer, alike pointerlajxed to .saiu frarne., said frame .carryingan auxiliary gyroscope.. for maintaining ,its horizontal axis in constantly parallel directions.

29..'In anautical apparatus, a frame car` rying f ,gyroscopes and angular deviationsmeasuring instrumentalties, said frame be- 1 30 ,having a inn' mounted in gimbals dependent from a ba l-and-socket joint, the latter being provided with a plurality of balls intermcz'iiate the op osing faces thereof to reduce friction.

30. n a nautical apparatus, a frame carrying gyroscopes and indicating means therefor, and gimbals suspending said frame, brackets ivotally carrying a bearing-block bottom aperture, a channel around theopening and a series of balls with said channel, a hemispherical journal resting upon and dependent from said balls and affixed to said gimbals.

31. In a nautical apparatus, a means for making electrical constants through a universal joint, com rising a hemispherical bowl provided wit a series of concentric grooves, a fluid conductor in said grooves, and conductors of solid material terminating within said fluid material.

32. In a nautical apparatus, means for conducting a three-phase circuit through a universal joint, comprising a hemispherical bowl of insulating material having a series of concentric grooves, conductors leading therefrom along a 'shaft mercury within 4said grooves, and springy metallic conductors leading from above and terminating in said mercury.

33. In a nautical apparatus, an electricall y-opcrated gyrosco'pe, and means for making electrical connections therewith comprising a hemspherical ball provided with a series of concentric grooves, a fluld conductor in said grooves', and conductors of solid material making connection with said fluid conductor.

ln testimony whereof I alli); my slgnature in presence of two witnesses.

FILIPPO VANZINI.

l/Vitnesses: l

EDOARDO TAGLIAVACCA, ENRICO FERRARIA. 

